<HTML>
<HEAD>
<META NAME="GENERATOR" Content="SOURCEDOC.EXE">
<META HTTP-EQUIV="Content-Type" content="text/html; charset=iso-8859-1">
<TITLE>FSOUND_DSP_GetSpectrum</TITLE>
<STYLE>
#flush {margin-left: -10p; margin-right: -0p}
#buttonbar {color: white}
</STYLE>
</HEAD>
<BODY TOPMARGIN=0 BGPROPERTIES="FIXED" BGCOLOR="white">
<FONT FACE="ARIAL">
<SPAN ID="flush">
<A NAME="SEE ALSO">
<TABLE WIDTH="100%" COLS=2 BORDER=0 BGCOLOR="#000000">
<TR ALIGN=RIGHT>
<TD ALIGN=LEFT>
<IMG SRC="banner03.gif" WIDTH="88" HEIGHT="31"  BORDER=0>
</TD>
<TD ALIGN=RIGHT VALIGN=TOP>
<FONT FACE="ARIAL" SIZE="2">
<A ID=buttonbar HREF="FSOUND_DSP_GetSFXUnit.html">
<IMG SRC="u_prev.gif" WIDTH="71" HEIGHT="16"  BORDER=0 ALT="Previous Topic">
</A>
<A ID=buttonbar HREF="FSOUND.html">
<IMG SRC="u_index.gif" WIDTH="47" HEIGHT="16"  BORDER=0 ALT="Index">
</A>
<A ID=buttonbar HREF="FSOUND_DSP_MixBuffers.html">
<IMG SRC="u_next.gif" WIDTH="48" HEIGHT="16"  BORDER=0 ALT="Next Topic">
</A>
</FONT></TD><TD WIDTH=15></TD>
</TR>
</TABLE>
</A>
</SPAN>
<A HREF="FSOUND.html#Functions"><H5>[API function]</A></H5>
<H2><A NAME="FSOUND_DSP_GetSpectrum">FSOUND_DSP_GetSpectrum</A></H2>
Function to return a pointer to the current spectrum buffer.  The buffer contains 512 floating<BR>
point values that represent each frequency band's amplitude for the current FMOD SoundSystem<BR>
mixing buffer.  The range of frequencies covered by the spectrum is 1 to the nyquist frequency<BR>
or half of the output rate.  So if the output rate is 44100, then frequencies provided are up<BR>
to 22050. (entry 511)<BR>
<P>
<B>F_FLOAT_API * F_API </B><B> </B><B>FSOUND_DSP_GetSpectrum</B><B>(</B><BR>
<B>);</B><BR>
<H3>Return Value</H3>
A pointer to a buffer containing 512 floats.<BR>
<H3>Remarks</H3>
Note that hardware sounds, MIDI, files do not register on the spectrum graph as they are not run through FMODs DSP system.<BR>
Note that to use this you have to turn on the FSOUND FFT DSP unit.  This is achieved by calling FSOUND_DSP_GetFFTUnit, then using FSOUND_DSP_SetActive to turn it on.<BR>
___________________<BR>
Supported on the following platforms : Win32, WinCE, Linux, Macintosh, XBox, GameCube<BR>
<H3>See Also</H3>
<A HREF="FSOUND_DSP_GetFFTUnit.html">FSOUND_DSP_GetFFTUnit</A>
, 
<A HREF="FSOUND_DSP_SetActive.html">FSOUND_DSP_SetActive</A>
<HR><BR><FONT SIZE="-2">This document copyright &copy;Firelight Technologies, Pty, Ltd, 1999-2002. All rights reserved.</FONT><BR>
<FONT SIZE="-2">Generated Thu Dec 15 17:31:29 2005
 by SourceDoc v0.10, the automated source code documenter.</FONT><BR>
</BODY>
</HTML>
